Tellurite Glasses Handbook

Laser emission of a Nd-doped mixed tellurite and zinc oxide glass

“…This is the case for the instance of the recently developed CaF 2 laser crystal codoped with Nd 3 and Lu 3 or Y 3 ions, because of the conjunction of good thermo-mechanical properties, typical of crystals, and broadband spectral properties, typical of glasses [2]. This is also the case for some Nd-doped nonlinear tellurite glasses [3][4][5][6][7][8][9], because of a very interesting combination of large nonlinear refractive index (25 times larger than that of silica) and wide transmittance range, and also because of a low maximum phonon frequency which allows rare-earth ion laser emissions in a wide spectral range [10].…”

“…In that sense, laser emission of Nd 3 in glasses has been reported in fluorides [11][12][13], chalcogenides [14], aluminosilicates [15], germanates [16], and, as just mentioned, in tellurite glasses [3][4][5][6][7]. Among oxi-tellurites, the TeO 2 -ZnO glass which is considered here in the present article combines good mechanical stability, chemical durability, high linear and nonlinear refractive indices, together with low phonon energies (∼750 cm −1 ), a wide transmission window (0.4-6 μm), and a high rare-earth solubility [10,17,18]. The large linear refractive indices (1.8 < n < 2.3) [10,17] of tellurite glasses imply large stimulated emission cross sections, sometimes larger than for phosphate glasses [19].…”

“…Among oxi-tellurites, the TeO 2 -ZnO glass which is considered here in the present article combines good mechanical stability, chemical durability, high linear and nonlinear refractive indices, together with low phonon energies (∼750 cm −1 ), a wide transmission window (0.4-6 μm), and a high rare-earth solubility [10,17,18]. The large linear refractive indices (1.8 < n < 2.3) [10,17] of tellurite glasses imply large stimulated emission cross sections, sometimes larger than for phosphate glasses [19]. Their high nonlinear optical properties can be used advantageously for the development of Kerr-lens mode-locked subpicosecond lasers.…”

Upconversion luminescence in Er3+ doped Ga10Ge25S65 glass and glass-ceramic excited in the near-infrared

“…The search of transparent materials that can be doped with rare earth (RE) ions has been very intense in the past years motivated by applications in displays, biomedical lasers, optical sensors, optical amplifiers, among other uses. [1][2][3][4][5][6] In particular, special glasses and glass-ceramics are being increasingly studied because they have unique features such as large acceptance for high RE ions doping concentration, large optical homogeneity, wide transparency from the visible to the infrared region, high mechanical strengths and simple manufacture procedures for obtaining good optical quality samples. Among the materials that exhibit such appropriate characteristics for photonics are the chalcogenide glasses and chalcogenide glass-ceramics that exhibit high refractive index (%2.2), low cutoff phonon energy (%400 cm À1 ), and high stability against moisture and devitrification.…”

Spectroscopic properties of the Pr3+ ion in TeO2-WO3-PbO-La2O3 and TeO2-WO3-PbO-Lu2O3 glasses

“…Tellurite glasses are excellent hosts for active element doping with rare earth (RE) ions, justifying a continuous technological interest [8]. Among trivalent RE ions, the luminescence features of the Pr 3+ ion have became more popular because of its specific 4f 2 configuration, possessing 91 degenerate energy levels [9,10].…”